Table of Contents

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Dynamics of Economic and Demographic Behavior: "Clean Processes" From the Panel Study of Income Dynamics (PSID) (ICPSR 1239)

Principal Investigator(s):
Lillard, Lee A., University of Michigan

Summary:

Lee A. Lillard, director of the Retirement Research Center
at the University of Michigan, senior research scientist at its
Institute for Social Research, and professor of economics, developed a
unique method for analyzing the rich compendium of data collected by
the Panel Study of Income Dynamics (PSID) since its inception in 1968.
Lee died in December 2000, and his colleagues at PSID decided to
provide the fruits of his work to the research community so others
might benefit from an exploration of his techniques and methodologies
for analyzing data. Lee created what he called "clean processes" to
investigate a number of dynamic behaviors that are measured
longitudinally in PSID, such as employment, marriage-divorce, and
fertility. He and his programmers and research assistants put these
processes into a consistent framework, and made decisions about how to
resolve inconsistencies, missing items, etc. Data from the files can
be entered, as appropriate, in dynamic econometric models of related
and mutually causal processes: for instance, the relationships among
marriage, fertility, and female labor supply. Thus, researchers can
study various combinations of these behaviors without having to go
through complex file creation for each project.

Lee A. Lillard, director of the Retirement Research Center
at the University of Michigan, senior research scientist at its
Institute for Social Research, and professor of economics, developed a
unique method for analyzing the rich compendium of data collected by
the Panel Study of Income Dynamics (PSID) since its inception in 1968.
Lee died in December 2000, and his colleagues at PSID decided to
provide the fruits of his work to the research community so others
might benefit from an exploration of his techniques and methodologies
for analyzing data. Lee created what he called "clean processes" to
investigate a number of dynamic behaviors that are measured
longitudinally in PSID, such as employment, marriage-divorce, and
fertility. He and his programmers and research assistants put these
processes into a consistent framework, and made decisions about how to
resolve inconsistencies, missing items, etc. Data from the files can
be entered, as appropriate, in dynamic econometric models of related
and mutually causal processes: for instance, the relationships among
marriage, fertility, and female labor supply. Thus, researchers can
study various combinations of these behaviors without having to go
through complex file creation for each project.

Access Notes

These data are flagged as replication datasets
and are distributed exactly as they arrived from the data depositor. ICPSR has not checked or processed this material.
Users should consult the investigator(s) if further information is desired.

The public-use data files in this collection are available for access by the general public.
Access does not require affiliation with an ICPSR member institution.

Dataset(s)

Study Description

Citation

Lillard, Lee A. Dynamics of Economic and Demographic Behavior: "Clean Processes" From the Panel Study of Income Dynamics (PSID). ICPSR01239-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2001-05-17. https://doi.org/10.3886/ICPSR01239.v1

(1) This collection contains hundreds of individual
SAS data, documentation, and SAS program files that are organized into
three groups of files (directories): Programs, Data, and Docs. There
are a number of subdirectories inside each of these groups. For
example, Programs contains subdirectories that focus on topics or
processes such as "Earnings", "Death", "Employment", etc. Each of
these subdirectories has a number of SAS programs that generate SAS
data files with a corresponding name. For example, researchers
interested in the income "process" can examine the SAS program called
income.sas. It will produce a file called income.ssd01 and put it in
the Data directory. The Docs directory will provide the documentation
for this data file. (2) Consult the file "lillard.doc" for further
information and additional bibliographic citations. (3) The
documentation and program files are in ASCII and the SAS data files
are in binary format. (4) These data are part of ICPSR's
Publication-Related Archive and are distributed exactly as they
arrived from the data depositor. ICPSR has not checked or processed
this material.